Humans began farming around 10,000 years ago and domesticating animals before that. Ants, on the other hand, have been farming fungi for about 60 million years. Human agriculture includes a wide variety of plants, animals, fungi, etc. Non-human farmers typically specialize in one food source. This farming is a mutualism between the two species, and this is typically an obligate mutualism in which the producer cannot survive without the farming by the other species. The farmer too cannot survive without the other species. Examples of farming can be found all across the animal kingdom.